Erasers come in all shapes, sizes and colors, designed for the specific purpose of lifting marks from a page. Although erasers share the same general purpose, eraser sticks, machine erasers, and block erasers are more exacting in that purpose. Chemical imbued erasers and stiffer, more rigid eraser designs lend themselves to pen and ink, typewriter and laser printer corrections. Softer, more pliable designs eliminate paper wear while removing charcoal or graphite marks. Electric erasers work quickly, with minimal damage to paper medium. Soft vinyl erasers allow for precision correction of small marks, while art gum erasers allow for erasing large, broad areas.